RTumbler, LLC Replacement Retainer Ring 3 Pack for 3lb Tumbler Barrels

Replacement Retainer Rings for 3lb Tumblers

This three-pack supplies spare retainer rings sized for Thumler’s A-R1, A-R2, Model-T and MP-1 barrels that hold three pounds of media. The black rings are moulded from a synthetic compound chosen for science and hobby tumbling by adult users.

Fits Existing Barrels Without Modification

Each ring slides onto the barrel rim to hold the lid seal in place, requiring no tools or additional hardware. The material resists abrasion better than natural rubber and remains pliable at temperatures down to -20 F, so the seal stays effective in cold workshops.

Suits Owners Needing Long-Life Spares

The 15 year shelf life makes the pack practical for hobbyists who tumble intermittently and want replacements on hand. Buyers whose barrels use a different lid diameter or who need a single ring rather than a set of three should look elsewhere.